Workshop TR 7.2, Thursday 22 June, 11.00 - 12.30

Cycling and other modes

Geetam Tiwari, Indian Institute of Technology, Delhi, India Bicycles- an integral part of urban transport system in South Asian cities Bicycles and pedestrians are an integral element of urban transport in South Asian cities. The share of bicycle trips has reduced in large cities like Delhi, however, more than 50% of city residents can not afford any other mode of transport. In general Asian cities are characterised by a mix of non-motorised and motorised traffic and mixed land use patterns. In addition to bicycles, non-motorised rickshas are used for delivery of goods. The many semi-skilled workers use bicycles, and therefore the demand for bicycles and rickshas will remain great. This situation is not explicitly recognised in policy documents, and very little is done to improve facilities. Since primarily bicycles and other non-motorised vehicles (NMVs) use the inside lane, buses are unable to use the designated bus lanes and are forced to stop in the middle lane at stops. Providing a separate bicycle lane for NMVs would make more space available for motorised modes and make bicycling less hazardous. In the absence of segregated NMV lanes on arterial roads, it is also not possible to provide designated lanes for buses. Bicycle and pedestrians are an integral part of traffic, but existing urban transport infrastructure in South Asian cities do not meet the needs of a large number of city residents. Planning for non-motorised transport and integrating it with the other modes is a prerequisite for creating sustainable transport systems. The presentation details a case study of a corridor in Delhi to illustrate how existing arterial roads can be re-planned to provide for safer and more convenient bicycling and also improve efficiency of bus transport.

Masaru Kiyota, Professor, Department of Civil Engineering, Saga University, Japan Upali Vandebona, Senior lecturer, School of Civil and Environmental Engineering, The University of New South Wales, Australia Naomichi Katafuchi, Graduate student, Department of Civil Engineering, Saga University, Japan Shinichi Inoue, Lecturer, Faculty of Culture and Education, Saga University, Japan Bicycle and Pedestrian Traffic Conflicts on Shared Pavements A quantitative model has been developed to enable the estimation of the level of risk perceived by pedestrians being passed by cyclists. This model accounts for variables such as 1) bicycle speed, 2) closeness to the pedestrian and 3) pedestrian densities. The proposed model is based on the hypothesis that pedestrians feel the danger of passing bicycles when the level of risk exceeds a certain threshold. The model is based on field data from a selection of shared street and embodies the behaviour and psychology of the Japanese pedestrians and cyclists. However, it is anticipated that the methodology presented here is useful to planners worldwide who require behaviourally sound analytical methods to compare relative merits of segregated operations and shared road space usage strategies.